Lever for use as a walking beam or the like



May 23, 1939. w. H. SCALES LEVER FOR USE AS A WALKING BEAM OR THE LIKE 3 Sheets-Sheet 1' Filed June 13, 1.958

Walierfllmleg'.

May 23, 1939. w. H. scALES v LEVER FOR USE AS A WALKING BEAM OR THE LIKE 3 Sheet-Sheet 2 Filed June 15, 1938 May 23, 1939. w, H. SCALES LEVER FOR USE AS A WALKING BEAM OR THE LIKE Filed June 13, 1938 s Sheets-Sheet 3 Patented May 23, 1939 UN T D STATES LEVER FOB/USE AS A WALKING BEAM OR THE LIKE Walter H. Scales, New .mesne assignments,

Orleans, La., assignor, by to Timber Engineering Company, Washington, D. 0., a corporation of Delaware Application June 13,

1 Claim.

The invention relates to levers and has as an object the provision of a lever constructed to,

withstand the strains of use as a walkingbeam, as for instance to operate an oil well pump.-

It" is a further object of the invention to provide a lever so fashioned that it can be thoroughly cresoted against decay.

It is a further object of the invention to provide a lever that will have slight tendency to 10 checking and warping.

It is a further object of the invention to provide a lever that may be made of timbers of relanection with the accompanying drawings showing illustrative embodiments of the invention, and

wherein:

Figure 1 is a plan view of one form of the invention;

Fig. 2 is a side view of the same;

Fig. 3 is an end view seen from the right of Figures 1 and 2 and drawn to an enlarged scale; I

pumps in oil wells must be of enormous strength.

A usual size when made of timber is 14 x 26 inches in cross section by 26 feet long, and they should have a safe working load capacity of approxi- 45 mately twelve tons for operation of a one and one-half inch pump in a well of 4500 feet depth. It has been customary to construct levers ofthis character of a single timber which is obviously cumbersome to ship.

It is impossible also tocreosote a timber of the dimensions referred to in such a manner as to cause the creosote to strike entirely through the same, and furthermore particularly when subjected to the hot sun and dry climate of the oil 55 fields the single timber lever will split and warp Figs. 5 to '7 inclusive are views corresponding to Levers to serve as walking beams to operate 1 1938, Serial No.1213,483

(Cl. 74519) v r r in such: a manner as to weaken the-same. The total result is that the structures now in use are relatively. shortelived and quite expensive to renew.

In accordance with the present invention the lever is built up of parts and to cause the parts to work together as a unit, they are bolted together with timber connectors inserted there'- .between in a particular manner of placement.

The result is that the smaller timbers utilized may be more effectually creosoted and the moisture content reduced to the point desired. By virtue of the structure shown any warping or splitting due to climatic effect will not extend through a suificient portion of the assembled lever as to materially weaken it. 7

In the form of Figures 1 to 4 inclusive of the drawings, the individual parts l5 of the beam are constituted of timbers on edge. Desirable dimensions for these timbers is a thickness of three inches and any width readily available preferably assembled with the joints staggered.

Desirably as shown in this form of the invention the timber is given a quasi T-form by reason of the fact that the outer timbers l5 do not extend the full depth of the lever. To hold the "portions l5 and I5 in assembly there are shown through-bolts l6, timber connectors I! being placed around each bolt at each contact of the faces of the timbers. The added timbers l5 at the upper surface of the lever will assist in'resisting the tension upon the lever which is of course greatest at its upper surface. The greatest tendency to slippage of the timbers upon each other will be toward the ends of the lever, and as shown at these portions the bolts 16 and the accompanying connectors I l are more closely spaced than adjacent the center of the lever. Any type of timber connector may be used in the lever of the invention.

In Figures 5 to 8 inclusive the individual mem- This form is slightly less resistant to the stresses than the form of Figures 1 to 4 inclusive but is more readilyv constructed since it is not difiicult to secure the individual timbers of dimensions up to 14 inches in width, whenthe lever is to be of the dimensions of 14 by 26 inches as above indicated. In this form of the invention, there is illustrated the use of connectors I9 commonly known as Smitt grid connectors but of a special form wherebyeach coacts with both of a pair of through-bolts 20. In this form of the invention also the connectors are more closely spaced adjacent the ends of the lever.

hers is making up the lever are placed flatwise. Q

Certain of the timbers at the lower portion of the lever are shown as progressively shorter as at El, 22, and 23 to provide the extra strength required at the center of the lever where the fulcrum will be applied.

In the form of Figures 9 to 12 inclusive the lever is made up of a combination of units on edge and placed flatwise with connectors 24 placed about all of the through-bolts 25, 26.

The timbers 27 placed on edge are provided with the through-bolts 25 and the timbers 28, 29 placed flatwise are connected to the assembled timbers 21 by the throughbolts 26. Certain of the timbers 28 and 29 are shown as applied to :the central portion of the lever for the required added strength therein. In this form of the invention also the connectors are more closely spaced at the ends of the lever than at its central'portion.

The individual portions which make up the lever of the invention may be framed, bored and prepared for insertion of the timber connectors at the mill and may then be readily shipped in the manner of common lumber to the place of use where they may be assembled with the required hoisting means for placing readily at hand.

Minor changes may be made in the physical embodiments of the invention within the scope of the appended claim without departing from the spirit thereof.

I claim: 7

A timber lever of the walking beam type comprising, in combination: a plurality of laminations of substantial thickness formed of elements integral throughout the length of the lever; said laminations lying face to face in parallel planes; said laminations comprising elements placed in meeting edge to edge relation in the lamination; the joints between said meeting edges being in staggered relation to the joints of the adjacent lamination; a plurality of bolts passing through said laminations, securing each of the individual elements to an element of an adjacent lamination; the connecting bolts adjacent the ends of the lever more closely spaced than those near the middle thereof; and timber connectors sunk into the meeting faces of the laminations around at least some of said bolts; whereby said elements may be individually creosoted, framed and shipped in disassembled relation. 7

WALTER H. SCALES. 

